I follow some of the answer of this, But I still didn't get it.
It display blank on my page.
What I have tried:
.container{
width: 100%;
height: 100vh;
background-image: linear-gradient (to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 100%),url('images/background.jpg');
background-position: center;
background size: cover;
}
or
.container{
width: 100%;
height: 100vh;
background-image: linear-gradient (rgba(0, 0, 0, 0.7) rgba(0, 0, 0, 0.7) ),url('images/background.jpg');
background-position: center;
background size: cover;
}